Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc95e0c074224e1f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 11:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af53f48877bb93792aad0f5aaf96bfc1 SHA-1: 8d1966ebab195ef413623c2a283052804fe120cd SHA-256: cc95e0c074224e1fcac6334f831c17c20276172180e8bf450dfefc6498294548
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external sites, including a known malicious redirector. The document body, though heavily obfuscated, contains text related to an 'IT project manager job description template' and a URL that appears to be a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=it+project+manager+job+description+template
    • http://nabap.lindastager.com/uploads/1/3/0/7/130740221/tazid_zubawukivoz_nofijudinak.pdf
    • http://topog.boostfitness.co.uk/uploads/1/3/1/4/131406798/xereladatutifuvixaf.pdf
    • http://files.humanpoem.com/uploads/1/3/0/7/130738765/ce7b9cea9869d.pdf
    • https://cdn.shopify.com/s/files/1/0439/3949/6094/files/granny_smith_full_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/86560749896.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
    • https://cdn.shopify.com/s/files/1/0452/8275/4722/files/pakistani_punjabi_movies.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/60561472866.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0282/files/movie_apk_for_firestick_2019.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/gaxajimasax.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/40538361961.pdf
    • https://cdn.shopify.com/s/files/1/0435/3225/5392/files/fubiwudula.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006160.bin
9fd2d90b376c67df0af4df32c13c0399123cd5cc05b26ea961d64aa59f299269		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 5544 bytes
font_01_sfnt_off0000741a.bin
bf94ca82e8ef68547b1ab9f17e155a266b586e48d27c45fec750bbd94cf070f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741A 10012 bytes

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